Towing and circulating tanks tidal energy converter test results

Date 2018-10
Temporal extent 2013-12 -2014-04
Author(s) Gaurier BenoitORCID1, Germain GregoryORCID1, Facq Jean-Valery1, Day SandyORCID2, Johnstone Cameron3, Di Felice FabioORCID4, Costanzo Marcello4
Affiliation(s) 1 : IFREMER, Marine Structures Laboratory, Boulogne-sur-mer, France
2 : University of Strathclyde, Kelvin Hydrodynamics Laboratory, Glasgow, UK
3 : University of Strathclyde, Energy Systems Research Unit, Glasgow, UK
4 : CNR-INSEAN, Propulsion and Cavitation Laboratory, Rome, Italy
DOI 10.17882/57450
Publisher SEANOE

A comparative "Round Robin" testing program has been conducted as part of the EC FP VII MaRINET program in order to evaluate the impact of different experimental facilities on the test results. The aim of the trials was to test the same model tidal turbine in four different test facilities to explore the sensitivity of the results to the choice of facility. The facilities used in the testing program include two towing tanks, at CNR-INSEAN (Rome, 220 m long) and at Strathclyde University (Glasgow, 76 m long), and two recirculating tanks at CNR-INSEAN (Rome) and at IFREMER (Boulogne sur mer).

The model consists of a three-bladed horizontal axis turbine, which is D=0.7m in diameter. The rotor is connected to a motor-gearbox assembly consisting of a gearbox, a DC motor, a ballast load and a motor speed control unit, providing an active rotor speed control. The turbine blades are designed from a NACA 63-418 profile. A torque meter is placed between the rotor and the gearbox for torque measurements.

The forces and moments acting on the structure are obtained by means of a six-component load cell, which measures the three force components and the three moment components and the torque by a torque sensor directly fixed between the rotor and the motor. All signals coming from the load-cell, the torque-meter and the motor are recorded synchronously at a sample frequency of 100Hz.

In each tank, the turbine depth is kept constant at 1 m under the free surface. The turbine is fixed on a moving carriage in the towing tanks and on a customised mounting in the flume tanks. The flow velocity or carriage velocity is chosen and fixed for each set of tests; the turbine rotation speed is then varied to adjust the tip speed ratio. The rotational speed is measured and controlled for each measurement point, but is adjusted manually.

Licence CC-BY-NC
Utilisation Data are published without any warranty, express or implied. The user assumes all risk arising from his/her use of data. Data are intended to be research-quality and include estimates of data quality and accuracy, but it is possible that these estimates or the data themselves contain errors. It is the sole responsibility of the user to assess if the data are appropriate for his/her use, and to interpret the data, data quality, and data accuracy accordingly. Authors welcome users to ask questions and report problems.
File Size Format Processing Access 110 MB TEXTE Quality controlled data Open access
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How to cite 

Gaurier Benoit, Germain Gregory, Facq Jean-Valery, Day Sandy, Johnstone Cameron, Di Felice Fabio, Costanzo Marcello (2018). Towing and circulating tanks tidal energy converter test results. SEANOE.

In addition to properly cite this dataset, it would be appreciated that the following work(s) be cited too, when using this dataset in a publication :

Gaurier Benoit, Germain Gregory, Facq Jean-Valery, Johnstone C.M., Grant A.D., Day A.H., Nixon E., Di Felice F., Costanzo M. (2015). Tidal Energy ”Round Robin” Tests Comparisons between towing tank and circulating tank results. International Journal of Marine Energy, 12, 87-109. Publisher's official version : , Open Access version :